Buying 2 1/2 year old new in box power amp

Is there anything I should be aware of buying a Musical Fidelity M6 PRX amp
2 1/2 years old new in box. Thanks
Only that you should test it before you buy. New in box does not mean it is operational, especially if stored in an unheated area.
I just bought a preamp that was 5 year old NIB. I was a bit taken aback when I first found out it was 5 years old, but it looks and works like it's brand new, so I guess no harm, no foul.